Alkanolamines for CO 2 removal from gas streams

• US 8,486,356 B2
• Filed: 04/01/2009
• Issued: 07/16/2013
• Est. Priority Date: 04/01/2008
• Status: Expired due to Fees

• Current Assignee: Commonwealth Scientific & Industrial Research Organisation (Commonwealth Of Australia As Represented By Department Of Industry, Innovation, Climate Change, Science, Research And Tertiary Education)
• Original Assignee: Commonwealth Scientific & Industrial Research Organisation (Commonwealth Of Australia As Represented By Department Of Industry, Innovation, Climate Change, Science, Research And Tertiary Education)
• Inventors: Attalla, Moetaz Ibrahim, Puxty, Graeme Douglas, Allport, Andrew Wayne, Bown, Mark, Yang, Qi, Rowland, Robert Cameron
• Primary Examiner(s): McCracken, Daniel C
• Assistant Examiner(s): BERNS, DANIEL J
• Application Number:
  US12/936,044
• Publication Number:
  US 20110116997A1
• Time in Patent Office: 1,567 Days
• Field of Search: 423/220, 423/228
• US Class Current: 423/228
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/1406 Multiple stage absorption
• CPC Class Codes: B01D 53/1425 Regeneration of liquid absorbents
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/1493 Selection of liquid materials for use as absorbents
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

A process for the capture of CO₂ from gas streams comprising contacting a CO₂ containing gas stream with an aqueous alkanolamine solution, wherein the alkanolamine is selected from the group consisting of: 3-piperidinemethanol, Tricine, 3-quinuclidinol, 3-piperidino-1,2-propanediol and their salts.

Claims

1. A process for the capture of CO2 from gas streams comprising contacting a CO2 containing gas stream with an aqueous alkanolamine solution, wherein the alkanolamine is selected from the group consisting of:

3-piperidinemethanol, Tricine, 3-quinuclidinol, 3-piperidino-1,2-propanediol and their salts.

2. A process according to claim 1, wherein the aikanolamine is 3-piperidinemethanol.

3. A process according to claim 1, wherein the alkanolamine is Tricine.

4. A process according to claim 1, wherein the alkanolamine is 3-quinuclidinol.

5. A process according to claim 1, wherein the alkanolamine is 3-piperidino-1,2-propanediol.